/**
 * jQuery.query - Query String Modification and Creation for jQuery
 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
 * Date: 2009/8/13
 *
 * @author Blair Mitchelmore
 * @version 2.2.3
 *
 **/
new function(settings) { 
    // Various Settings
    var $separator = settings.separator || '&';
    var $spaces = settings.spaces === false ? false : true;
    var $suffix = settings.suffix === false ? '' : '[]';
    var $prefix = settings.prefix === false ? false : true;
    var $hash = $prefix ? settings.hash === true ? "#" : "?" : "";
    var $numbers = settings.numbers === false ? false : true;
  
    jQuery.query = new function() {
      var is = function(o, t) {
        return o != undefined && o !== null && (!!t ? o.constructor == t : true);
      };
      var parse = function(path) {
        var m, rx = /\[([^[]*)\]/g, match = /^([^[]+)(\[.*\])?$/.exec(path), base = match[1], tokens = [];
        while (m = rx.exec(match[2])) tokens.push(m[1]);
        return [base, tokens];
      };
      var set = function(target, tokens, value) {
        var o, token = tokens.shift();
        if (typeof target != 'object') target = null;
        if (token === "") {
          if (!target) target = [];
          if (is(target, Array)) {
            target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
          } else if (is(target, Object)) {
            var i = 0;
            while (target[i++] != null);
            target[--i] = tokens.length == 0 ? value : set(target[i], tokens.slice(0), value);
          } else {
            target = [];
            target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value));
          }
        } else if (token && token.match(/^\s*[0-9]+\s*$/)) {
          var index = parseInt(token, 10);
          if (!target) target = [];
          target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
        } else if (token) {
          var index = token.replace(/^\s*|\s*$/g, "");
          if (!target) target = {};
          if (is(target, Array)) {
            var temp = {};
            for (var i = 0; i < target.length; ++i) {
              temp[i] = target[i];
            }
            target = temp;
          }
          target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value);
        } else {
          return value;
        }
        return target;
      };
      
      var queryObject = function(a) {
        var self = this;
        self.keys = {};
        
        if (a.queryObject) {
          jQuery.each(a.get(), function(key, val) {
            self.SET(key, val);
          });
        } else {
          self.parseNew.apply(self, arguments);
        }
        return self;
      };
      
      queryObject.prototype = {
        queryObject: true,
        parseNew: function(){
          var self = this;
          self.keys = {};
          jQuery.each(arguments, function() {
            var q = "" + this;
            q = q.replace(/^[?#]/,''); // remove any leading ? || #
            q = q.replace(/[;&]$/,''); // remove any trailing & || ;
            if ($spaces) q = q.replace(/[+]/g,' '); // replace +'s with spaces
            
            jQuery.each(q.split(/[&;]/), function(){
              var key = decodeURIComponent(this.split('=')[0] || "");
              var val = decodeURIComponent(this.split('=')[1] || "");
              
              if (!key) return;
              
              if ($numbers) {
                if (/^[+-]?[0-9]+\.[0-9]*$/.test(val)) // simple float regex
                  val = parseFloat(val);
                else if (/^[+-]?[1-9][0-9]*$/.test(val)) // simple int regex
                  val = parseInt(val, 10);
              }
              
              val = (!val && val !== 0) ? true : val;
              
              self.SET(key, val);
            });
          });
          return self;
        },
        has: function(key, type) {
          var value = this.get(key);
          return is(value, type);
        },
        GET: function(key) {
          if (!is(key)) return this.keys;
          var parsed = parse(key), base = parsed[0], tokens = parsed[1];
          var target = this.keys[base];
          while (target != null && tokens.length != 0) {
            target = target[tokens.shift()];
          }
          return typeof target == 'number' ? target : target || "";
        },
        get: function(key) {
          var target = this.GET(key);
          if (is(target, Object))
            return jQuery.extend(true, {}, target);
          else if (is(target, Array))
            return target.slice(0);
          return target;
        },
        SET: function(key, val) {
          var value = !is(val) ? null : val;
          var parsed = parse(key), base = parsed[0], tokens = parsed[1];
          var target = this.keys[base];
          this.keys[base] = set(target, tokens.slice(0), value);
          return this;
        },
        set: function(key, val) {
          return this.copy().SET(key, val);
        },
        REMOVE: function(key, val) {
          if (val) {
            var target = this.GET(key);
            if (is(target, Array)) {
              for (tval in target) {
                  target[tval] = target[tval].toString();
              }
              var index = $.inArray(val, target);
              if (index >= 0) {
                key = target.splice(index, 1);
                key = key[index];
              } else {
                return;
              }
            } else if (val != target) {
                return;
            }
          }
          return this.SET(key, null).COMPACT();
        },
        remove: function(key, val) {
          return this.copy().REMOVE(key, val);
        },
        EMPTY: function() {
          var self = this;
          jQuery.each(self.keys, function(key, value) {
            delete self.keys[key];
          });
          return self;
        },
        load: function(url) {
          var hash = url.replace(/^.*?[#](.+?)(?:\?.+)?$/, "$1");
          var search = url.replace(/^.*?[?](.+?)(?:#.+)?$/, "$1");
          return new queryObject(url.length == search.length ? '' : search, url.length == hash.length ? '' : hash);
        },
        empty: function() {
          return this.copy().EMPTY();
        },
        copy: function() {
          return new queryObject(this);
        },
        COMPACT: function() {
          function build(orig) {
            var obj = typeof orig == "object" ? is(orig, Array) ? [] : {} : orig;
            if (typeof orig == 'object') {
              function add(o, key, value) {
                if (is(o, Array))
                  o.push(value);
                else
                  o[key] = value;
              }
              jQuery.each(orig, function(key, value) {
                if (!is(value)) return true;
                add(obj, key, build(value));
              });
            }
            return obj;
          }
          this.keys = build(this.keys);
          return this;
        },
        compact: function() {
          return this.copy().COMPACT();
        },
        toString: function() {
          var i = 0, queryString = [], chunks = [], self = this;
          var encode = function(str) {
            str = str + "";
            str = encodeURIComponent(str);
            if ($spaces) str = str.replace(/%20/g, "+");
            return str;
          };
          var addFields = function(arr, key, value) {
            if (!is(value) || value === false) return;
            var o = [encode(key)];
            if (value !== true) {
              o.push("=");
              o.push(encode(value));
            }
            arr.push(o.join(""));
          };
          var build = function(obj, base) {
            var newKey = function(key) {
              return !base || base == "" ? [key].join("") : [base, "[", key, "]"].join("");
            };
            jQuery.each(obj, function(key, value) {
              if (typeof value == 'object') 
                build(value, newKey(key));
              else
                addFields(chunks, newKey(key), value);
            });
          };
          
          build(this.keys);
          
          if (chunks.length > 0) queryString.push($hash);
          queryString.push(chunks.join($separator));
          
          return queryString.join("");
        }
      };
      
      return new queryObject(location.search, location.hash);
    };
  }(jQuery.query || {}); // Pass in jQuery.query as settings object
  